Who knows if it's in the same state of tune? Could have an open port cylinder or the like.
STIHL MS 400.1
- Thread starter bwalker
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Is there any place that is actually selling these right now? Or are these all just factory demonstration units. I have not seen any for sale at all, even outside of the USA..
I don’t believe they are for sale anywhere yet. Normally, they would get released in Europe first and then Canada for a few months before they were available in the states
Took, something like 2-3 years till we saw the original ms400 state side from it's first release.
That’s possible, but it would require a complete redesign of the carburetor, intake, cylinder, case…. But looking at that parts breakdown, the intake is more like a 500 and doesn’t appear to be strato It would be interesting to see for certain
JasonL37179
ArboristSite Lurker
This new 400.1 looks to me like nothing more than consolidating production by eliminating a model to save $. All companies are forced to due to rampant inflation. It’s way worse than what the Fed tells/lies to us... Stihl did the same by axing the MS241, and let the 250 & 261 fill that void. Yes, both are very different saws, but both are versatile enough with a broad appeal and perennial best sellers. The 362 is proven, and the 60cc class a big market. Why not update it to top of spec for its class, and re-brand it? Not that I like this, but it’s the way it is. I suspect more of this will happen too.
Plus, the 400 is definitely more of a one-off with the magnesium piston. I never understood that, given all the R&D put into aluminum pistons. Saws are industrial machines that have a hard life. They’re not race engines with rigid maintenance. BMW used magnesium blocks then went back to aluminum when they started adding turbos to their i6 to handle the added cylinder pressure.
Jason
Plus, the 400 is definitely more of a one-off with the magnesium piston. I never understood that, given all the R&D put into aluminum pistons. Saws are industrial machines that have a hard life. They’re not race engines with rigid maintenance. BMW used magnesium blocks then went back to aluminum when they started adding turbos to their i6 to handle the added cylinder pressure.
Jason
The 362/400 chassis is long in the tooth and due a refresh hence the 400.1. Simple as that.
Magnesium pistons where used in the 1930's ,so its hardly high tech.
Beaverblade
New Member
What parts/spares are a good idea to have on hand with part numbers if available? Appreciate it.
Only thing I'm really worried about is getting a spare piston and cylinder. Not expecting to need it for a really long time.
I would bet those items will be discontinued rather quickly.
I meant, it's the only part I'm getting now, but not planning on having to need it for some time.
huh? I'm VERY curious... if its too much to get into in this thread feel free to PM me but I'm curious to know what your source data is on mtronic saws "flooding" to govern max RPM... that... sounds... (shrug) unbelievable.
But having bought my first mtronic saw earlier this year I'm eager to learn all that there is to know about them... because although I'm pleased with the easy starting and automatic adjustment for altitude and temp changes etc I'm still trying to "figure them out"
I feel a bit like a guy who drove manual transmission with a clutch his whole life and now all the cars are automatic trans (uh... hey wait shouldn't I be shifting now?) kind of feeling if that makes sense...
So seriously... if you'd indulge me, how does mtronic govern max RPM by "flooding" the saw?
TIA,
I drive my automatic like it's a manual, for the point of this conversation. You can go from.idle to 4krpm with an automatic, or you can throttle the fuel with your foot and let the engine rise/fall through the "gears" like you would with a manual.
I also use my 2 and L as often or more often than D, which is similar to gearing, especially on hills or on dirt. Turning off the overdrive is also often helpful and runs the engine at a slightly higher rpm under certain conditions. Overdrive generally kicks in at 55mph+, but it givesmore engine-efficient highway speeds at 35-40+(and the ability to go over 55.) I often have the OD off if going less than 30-35mph.
05 f150, for context. V8, 5.4l
Within the SDS software from the MDG1 tool, you can see the max rpm the saw achieved since it was last hooked up. Sometimes they read 13,600, sometimes 13,800, sometimes 14.086, sometimes 13,881. It’s always random. Limited coils are more exact, not as random.
The v1 and v2 ms261c were notorious for running slightly lean. When running the saw and it was acting normally, you could hear the rpm at max throttle consistently at the same rpm. When (if) they start running lean you can hear the rpm turning higher than previously
It's not unusual to regulate rpm on a saw with fuel. Several models of carbs are designed to do just this over the years. (Not well imo) no reason that the mtronic can't/ wouldn't do it as well.
When you really think about it rev limiting with fuel makes alot more sense than doing the same with the ignition.
Need to over look some of his wrong info.
Nice video, thanks for sharing.
